The CORALIE survey for southern extra-solar planets. I. A planet orbiting the star Gliese 86
Abstract
A 4 M_J planet with a 15.8 day orbital period has been detected from very precise radial velocity measurements with the CORALIE echelle spectrograph. A second remote and more massive companion has also been detected. All the planetary companions so far detected in orbit closer than 0.08 AU have a parent star with a statistically higher metal content compared to the metallicity distribution of other stars with planets. Different processes occuring during their formation may provide a possible explanation for this observation. Based on observations collected at the La Silla Observatory, ESO Chile, with the echelle spectrograph CORALIE at the 1.2m Euler Swiss telescope
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 2000
- Bibcode:
- 2000A&A...354...99Q
- Keywords:
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- STARS: PLANETARY SYSTEMS;
- STARS: INDIVIDUAL: GJ 86;
- STARS: LOW-MASS;
- BROWN DWARFS;
- STARS: BINARIES: SPECTROSCOPIC